Home / 16,869.40-25,319.40-8,555.20

Finding the Fourth Proportional to 16,869.40, 25,319.40 and 8,555.20

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Solution

The fourth proportional to 16,869.40, 25,319.40 and 8,555.20 is: 12,840.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,869.40 : 25,319.40 = 8,555.20 : x
  2. Step 2: Convert to fraction form
    16,869.40/25,319.40 = 8,555.20/x
  3. Step 3: Cross multiply
    16,869.40x = 25,319.40 × 8,555.20
  4. Step 4: Simplify right side
    16,869.40x = 216,612,530.88
  5. Step 5: Solve for x
    x = 216,612,530.88/16,869.40
  6. Step 6: Final answer
    x = 12,840.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.